Comparison

Ember Fasting vs SOL

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Ember Fasting

This app provides a simple and beautiful intermittent fasting timer with a widget-first design. It offers precise tracking of fasting progress, various popular protocols, and metabolic insights for Pro users. The app focuses on a clean user experience without ads or dark patterns.

Highlights
  • Widget-first design for home and lock screens
  • Fast launch time and smooth animations
  • Live metabolic process tracking (Pro)
  • Support for 5 popular fasting protocols
  • Streak tracking and milestone celebrations
  • Smart notifications for fast completion
Features
Read full description

The fasting timer that respects your time and your wallet. Ember is a beautifully crafted intermittent fasting timer that just works. No account required. No ads. No dark patterns. Just a precise, reliable timer with stunning widgets and honest pricing. WIDGET-FIRST DESIGN Check your fasting progress without opening the app. Ember offers 7 widget styles: small interactive, medium, large, Lock Screen, and StandBy. Your progress is always a glance away. Start and stop fasts right from your home screen. BEAUTIFUL & FAST Launches in under a second. Your body runs multiple metabolic processes during a fast: fat burning, ketosis, autophagy. They overlap and build on each other gradually. Ember tracks your progress with smooth animations and warm, purposeful design. Choose from 10 curated color themes or set your own custom accent color. Pick from 8 app icon styles to match your aesthetic. METABOLIC INSIGHT (PRO) Fasting isn't a series of stages you enter and leave, it's overlapping biological processes that build on each other. Pro unlocks live metabolic process tracking: see fat burning, ketosis, and autophagy ramping simultaneously with intensity indicators. Tap the info icon during any fast to see exactly what's happening in your body. EVERYTHING YOU NEED, NOTHING YOU DON'T - All 5 popular protocols: 16:8, 18:6, 20:4, OMAD, or create your own - Streak tracking with milestone celebrations - History with weekly calendar view - Basic stats to track your progress - Smart notifications for fast completion, zone transitions, and daily reminders HONEST PRICING The full fasting timer is free. No trial traps. No surprise charges. Pro unlocks metabolic insight, extra widget styles, themes, icons, and advanced notifications for $1.99/month, $14.99/year, or $29.99 lifetime. That's it. PRIVACY BY DESIGN Your data never leaves your device. No account. No analytics. No tracking. Our App Store privacy label is "Data Not Collected"...and we mean it. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

SOL

Read full description

SOL (솔) — Korean for Pine Tree. Like the pine that endures through every season, SOL stands with you through every fast. WHAT MAKES SOL DIFFERENT Most fasting apps just show a timer. SOL shows you what's actually happening inside your body — in real time. As you fast, SOL guides you through each biological phase: Fed State → Insulin Dropping → Fat Burning → Ketosis → Autophagy → Deep Autophagy → Growth Hormone Surge → Immune Reset FEATURES • Beautiful minimal timer with progress ring • Real-time body phase updates with scientific sources • Full body timeline — see all 8 phases and your progress • Tap any phase for in-depth science and PubMed sources • Smart notifications at each milestone • Stats dashboard — track your fasting journey • Background timer — keeps running when you close the app • Light & dark mode with handcrafted watercolor textures • Home screen widget • Community pulse — you're not fasting alone • Share your results with a beautiful card FASTING GOALS Choose from 16h, 18h, 20h, 24h, 36h, 48h, 72h, or go Open with no time limit. Hit your goal? Extend to the next level. DESIGNED WITH INTENTION SOL is inspired by the simplicity of nature. No clutter, no ads, no unnecessary features. Just you, your fast, and the knowledge of what your body is doing. All body phase information is based on peer-reviewed scientific research with direct links to PubMed sources. Begin your fast. Know your body. Grow like the pine.

Screenshots

Ember Fasting4 screens
SOL4 screens

Verdict

The call

The clearest difference is in-app purchases: SOL at none against Ember Fasting's 3. On price, update cadence, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Ember Fasting sells 3 in-app purchases, starting at $1.99 per month. SOL asks for nothing beyond the download.

UpkeepUpdate frequency

Ember Fasting ships an update every 2 weeks, SOL fortnightly. The most recent releases landed on September 23, 2026 and October 6, 2026 respectively.

Scorecard1 real difference · 8 level
Ember Fasting versus SOL: the parameters behind the verdict, then further details
ParameterEmber FastingSOL
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 2 weeks — betterFortnightly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.016 — better
Further details — not scored
Size3 MB6 MB
Age rating4+4+
DeveloperChris SchradeDanny Linsner

In-app purchases

3 purchases

Ember Fasting

Subscriptions2
  • Ember Pro Monthly$1.991 Month
  • Ember Pro Annual$14.991 Year
One-time1
  • FastApp Pro Lifetime$29.99
None

SOL

No in-app purchases

Questions

Is Ember Fasting free?
Ember Fasting is free to download, with in-app purchases available.
Is SOL free?
SOL is free to download, with no in-app purchases.
Do Ember Fasting or SOL have ads?
Neither Ember Fasting nor SOL shows ads.
Which is updated more often, Ember Fasting or SOL?
Ember Fasting ships an update every 2 weeks, and SOL fortnightly. Most recently, Ember Fasting was updated on September 23, 2026 and SOL on October 6, 2026.

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